Telegraphic transmitting device.



PATENTED MAY 22, 1906.

-I. KITSBE. TELEGRAPHIG TRANSMITTING DEVICE.

APPLICATION FILED MAY 27, 1905.

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PATENTED MAY 22, 1906.

I. KITSEE. TELBGRAPHIG TRANSMITTING DEVICE.

APPLICATION FILED MAYZ'I, 1905.

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onirnn STATES PATENT oFFioE.

ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO WILLIAM J. LATTA, OF PHILADELPHIA, PENNSYLVANIA.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed May 2'7, 1905. I Serial No. 262,635.

To all whom it may concern.-

Be it known that I, IsIDoR KITsEE, of the city and county of Philadelphia, State of Penn sylvania, have invented certain new and useful Improvements in Telegraphic Transmitting Devices, of which the following is a speciiication.

My invention relates to an improvement in telegraphic transmitting devices.

Its object is to send with the aid of a com-.

mon transmitting-key connected to the C16: vices embodying my invention true reversals over the line of transmission. 1

In Letters Patent No. 777,259, granted to me December 13, 1904, I have pointed out the necessity of telegraphing with true reversals over long-distance lines or cables, and to the transmission over such lines this, my invention, has special reference.

Referring to the drawings, Figure 1 is a top plan view of a device adapted to change the polarity or direction of the flow of impulses transmitted over the line. Fig. 2 is a side elevation of the same, partially in section, to illustrate part of the mechanism of the device in detail. Fig. 3 is a diagrammatic view showing the device in connection with the transmitting-key and showing the electrical connections to the transmitting batteries and the line.

A is an electromagnetic device actuating the mechanical part of the pole-changing de vice. A is the movable lever thereof. To this lever is secured the escapement B, working into the toothed wheel C, keyed to the shaft D. To this shaft is also keyed the contact-wheel E, provided with the contactpoints or teeth e. In operative relation to these points or teeth e are the contactbrushes F and F, secured to the non-conducting support F The teeth of the gear- Wheel G, keyed to the same shaft as the contact-wheel, mesh with the teeth of the gearwheel H, keyed to the shaft I, and the teeth of the gear-wheel J, keyed to the shaft K, mesh with the teeth of the wheel h, keyed to the shaft I. Revolving in unison with the wheel J is the ratchet-wheel J in operative relation to the ratchet J On the shaft K is loosely mounted the drum L, provided with the cord M, having attached thereto the weight M. This device is provided with the binding-posts a and a securing the terminals tact N and the intermediate conductor N The electrical connection of this device is as follows: The lever N of the key N is connected, through wire 1, with the binding-post a Brush F is connected, through wire 2, binding-post a and wire 5, with the positive pole of the source of current O, joined through wire 6 with the positive pole of the source of current 0, the negative pole of which is connected, through wire 4, binding-post a and wire 3, with the brush F. Both sources O and O are connected at their junction through wire 7 with the ground Z. To the stationary contact N of the key N is connected, through wire 8 and binding-post a, one terminal of the coil of the electromagnetic device A, and the other terminal of said coil is connected, through binding-post a and wire 9, with one pole, here shown as the negative pole of the source of current P, the other pole of which is connected, through wire 10, with the intermediate conductor N of the key N. The contact-point N is also in electrical contact through wire 11 with the line of transmission.

Before describing the operation of the device it is necessary to state that the teeth 6 of the contact-wheel E are arranged in relation to the brushes F and F in a manner so that when the brush F touches one of these teeth the brush F is out of contact with said teeth, and, vice versa, if the brush F touches one of said teeth the brush F is out of contact with same. It is also necessary to state that the number of teeth or contact-points of the contact-wheel E has to coincide with the number of teeth in the escapement-wheel O, and it may be stated that the movable part A of the electromagnetic device A may be so adjusted that through its downward stroke the escapement B will be brought in relation to the teeth of the wheel 0, so as to allow for each downward stroke the escape of one of the teeth of said wheel.

The operation of the device embodying my invention is as follows: Normallythat is, when'the key is not depressedthe circuit .mediate conductor N lever N, wire 1, bindincluding the coil of electromagnetic device A is open. So, also, will the circuit of the batteries O and 0 be interrupted, for the reason that no matter if the brush F or F touches one tooth e of the wheel E, yetthis circuit will always be interrupted as long as the lever N is out of contact with the line of transmission. To send an impulse over the line,- the operator depresses the lever N of the key N. Through this depression the intermediate piece I 3 will first be brought in contact with N thereby closing the circuit, including the electromagnetic device A. The. armature A of this device will be brought downward, and this operation will result therein that the escapement B will allow one tooth of the wheel 0 to escape. It is now supposed that formerly the brush F was resting on one of the teeth 6. This brush will nowbe brought out of contact with this tooth, and the brush F will be brought in contact with one or the other of said teeth. Through a further de-' pression of the lever l of the key this lever will come in contact with the point N and will through same make electrical connection with the line of transmission grounded at the distant oint. A circuit will thereby be establishec comprising the battery 0, and the current will flow from the positive pole of this battery, junction-wire 6, wire 7, ground Z, through distant ground connected to the line of transmission, wire 11, contact N intering-post a, metallic part of the frame, shaft D wheel E, teeth 6, brush F, wire 3, bindingpost (1 wire 4, back to the negative pole of the battery 0. The im ulse transmitted, therefore, will flow in the irection of the unfeathered arrow through the line of transmission. It is supposed that the operator now transmits a second impulse over the line. Through the manipulation of the lever N the intermediate conductor N will again come first in contact with the point N thereby closing again the circuit, including the coil of electromagnetic device A. The armature A, which through the opening of the key has again resumed its upward position, will now again be drawn downward, through which action the escapement B will be operated in a manner to again release one tooth of the wheel 0, thereby revolving the wheel E a space equal to one tooth. This movement of the wheel E will bring out of contact the brush F from the tooth e, where it formerly rested, and will bring the brush F in contact with the adjacent tooth e of the same wheel. In now further depressing the lever N this lever in coming in electric contact with the point N will again close a circuit including the line of transmission; but this time the circuit will embrace the battery 0, and the current will flow from the positive pole of this battery, through wire 5, binding-post a wire 2, brush F, tooth e of the wheel E, shaft D, metallic frame and binding-post a, wire 1, lever N, intermediate conductor N con tact N line of transmission, distant ground, ground Z, wire 7, junction-wire 6, back to the negative pole of the battery 0. This impulse will therefore flow in the direction of the feathered arrow through the line of trans- --H1issionthat is, in a direction opposite to the preceding impulse. In the further operation of this key every succeeding depression will send one impulse over the line but each impulse will be of a polarity opposite to the polarity of the preceding impulse, and if the key is always depressed for the same unit of time it is obvious that true reversals are transmitted over the line.

The different gearing is necessary in this instrument for the reason that otherwise too frequent winding-up of the same would be necessary, and the weight M is necessary for the reason that otherwise the escapementwheel C would not revolve. In the working of this device it has also to be borne in mind that the escapement B does not perform any other function than to allow the revolving of the wheel G, actuated by the weight M.

I have here described the mechanical construction I prefer and have found to be eHicient in actual working over telegraph-lines;

but details of such device may be changed 5 in accordance with requirements without departing from the scope of my invention.

Instead of closing the line-circuit through the key the line-circuit can be closed through the downward stroke of the armature A of the electromagnetic device A. In this case the wire 1 may be connected to one part of the electromagnetic device and the wire 11 to the other part, so, for instance, the wire 1 to the adjustable contact-screw A of the armature A, and the wire 11 to the conducting part A of said device, as is indicated in Fig. '2 by the dotted lines.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In telegraphy, a transmitting device embracing the key proper, a pole-changing device, said pole-changing device embracing an electromagnet, an escapement carried by the armature of said electromagnet, a train of wheels, operatively connected to said escapement, a contact-wheel carried by the shaft of one of said wheels, two brushes in operative relation to said contact-wheel, a source of current for each of said contactbrushes, both sources electrically connected with each other and grounded at their junction, and driving means to revolve said train of wheels.

2. In telegraphy, a pole-changing transmitting device embracing a key proper, an electromagnetic device connected to said key, a pole-changing contact-wheel, electrical connection for same, two sources of current grounded at their junction, and means to connect alternately one or the other of said sources to said contact-wheel, driving means to revolve said contact-wheel, and means to make inoperative said driving means, said means depending on the energizing of the electromagnet through the operation of the key proper.

3. In a device of the class described, a contact-wheel, two brushes for said contactwheel, one source of current connected with the positive pole of one of said brushes, a second source connected with the negative pole of the second of said brushes, both sources grounded, driving means to revolve said contact-Wheel, an electromagnet and means car'- ried by said electromagnet to make inoper ative said driving means, a key adapted to make inoperative the means carried by said electromagnet.

In testimony whereof I hereby sign my name, in the presence of two subscribing witnesses, this 26th day of May, A, D. 1905,

ISIDOR KITSEE.

Witnesses:

EDITH R. STILLEY, ALVAH RITTENHoUsE. 

